Amount of the unrecorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77896938&loc=d3e25336-109308

Name:	us-gaap_UnrecordedUnconditionalPurchaseObligationBalanceSheetAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Commitments and Contingencies - Commitments (Details) - Capital Addition Purchase Commitments - USD ($) $ in Millions	Jun. 30, 2020	Jun. 30, 2019
Long-term Purchase Commitment [Line Items]
Unrecorded Unconditional Purchase Obligation		$ 130.8
Scenario, Forecast
Long-term Purchase Commitment [Line Items]
Unrecorded Unconditional Purchase Obligation	$ 123.5